Trolley-harp.



E. R. mum.

TROLLEY HARP.

APBLIOATIOI rmm In. 1. 1904.

no uonnn.

PATBNTED JULY 19, 1904. I

position represented in Fig. 3.

Patented July 19, 1904:.

PATENT OFF CE.

EARL R. WARREN, HOLYOKE, MASSACHUSETTS.

TROLLEY-HARP.

SPECIFICATION forming part of Letters Patent No. 765,449, dated July 19, 1904,

Application filed March 7, 1904:. Serial No. 196,878. (No model.)

To all whom it may concern.-

Be it known that I, EARL R. WARREN, a citizen of the United States of America, and a resident of Holyoke, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Trol-' icy-Harps, of which the following is a full, clear, and exact description.

The object of this invention, which relates to improvements in trolley-harps, is to provide a construction of the harp or yoke whereby the trolley-wheel may be removed and replaced with unusual facility.

The invention consists in combinations, arrangements, and constructions of parts, all substantially as hereinafter fully described, and set forth in the claims.

In the accompanying drawings, Figure 1 is a perspective View of the improved harp or trolley-wheel holder. Fig. 2 is substantially a central longitudinal section as taken on the line 2 2, Fig. 1. Fig. 3 is an edge view showing the movable member of the trolley-harp as swung to its opened position and the wheel removed. Fig. A is a horizontalcross-section as taken on the line 4 4:, Fig. 2. Fig. 5 is a face view of one of the jaws of the harp as seen at its inner side. Fig. 6 is a view in detaill showing the trolley-wheel-supporting ax e.

Similar characters-of reference indicate corresponding parts in all of the views.

In the drawings, A and A indicate the opposing jaws or cheek members of the trolleyharp carried by the shank B, the jaw A being, as indicated at a, hinge-connected to the other jaw, so that it may be swung to the open The portions of the two members A and A below the opposing cheek portions are constructed the one with a tongue 5 and the other with a socket (Z, into which the tongue matches and fits, as represented in Fig. 4;, the tongue and socketed parts of the two members A and A being transversely and horizontally intersected by a tapered hole f, in which is fitted a tapered pin 0, said pin when seated by its smaller end protruding, as represented in Fig. 4, beyond the edge of the member A, I

while its larger end, which also protrudes at by reason of the articulated character of the IQO the opposite side, has the contracted extremity 10, next to which is the shoulder 12, and the pin C for locking the hinged member A in its closed position is in turn locked or prevented from displacement by the spring-plate D, which is pivoted at 13 on the edge of the member A and has the aperture 1A therein to engage over the attenuated projecting end 10 of the tapered locking-pin C. This plate may for detachment be sprung outwardly to clear the locking-pin end portion 10, and then swung sidewise out of line of the tapered hole f, as represented in Fig. 3, whereupon by pressure by the finger at the opposite edge of the appliance the locking-pin may be forced from its bottoming or seat in the tapered hole and easily-withdrawn to leave the jaw A free to be swung to its opened position.

F represents the trolley-wheel axle, which is here represented as having supporting engagements in both of the jaws A and A, its engagement in the jaw A being anon-detachable engagement, (being so regarded during ordinary utilization of the trolley-harp, although the axle may be detached to be replaced when worn out,) while it has a readilydetachable engagement into and from the round hole or socket 15 therefor in the mov able jaw, and, as shown, the one end portion of the axle which fits in the socket 1 1 in the fixed jaw A has a transverse perforation 16,

through which a locking-pin 17 isdriven, said locking-pin being also engaged inv a hole 18, alined with the perforation through the axle and extending perpendicularly to the axis of thelatter. The axle, therefore, to all intents and purposes is as a fixed stud inwardly projecting from the jaw A, and the opposite end of this axle is slotted, as indicated at it, so that in cominginto the socket-hole 15 in the movable jaw A it straddles with a reasonably close fit the pin 19, which is applied in a hole formed in the jaw A in a line to cross the socket-hole 15, and thus it is seen that the axle is not only efiiciently supported in the jaws, but is interlocked therein and held against movement of any. character.

The trolley-wheel G is constructed as usual with the hollowed sides 1' and the hubs in, and

trolley-harp it is possible to construct and assemble the parts even when the jaws of the harp are formed with inwardly-extending ribs m at their upper portions, said ribs projecting and finding space for occupancy in the hollowed or recessed sides of the trolleywheel and inwardly beyond the side planes of the most widely-distended outer portions of said wheel.

The upper end portions of the jaws are, furthermore, as represented at n, upwardly and inwardly beveled or inclined, so as to be devoid of any portion against or into which the trolley-wire might come to a bearing, and whereby, therefore, in case the trolley is by one of the upper edges of either jaw thrust against the wire it will slide or be shed therefrom and with no liability of its acting as a lodgment or runner for the wire.

The jaws, either or both, are provided with an outwardly opening aperture J therethrough below and adjacent the axle, and the jaws have niches or recesses 0 in their outer sides downwardly extending beyond the aperture J, and a contact-spring L is supported on the outer side of each jaw having a shank portion thereof screwed or otherwise secured within the niche 0, while its free extremity is inwardly deflected and extended through the aperture J to assume a position within the inner side of the jaw closely to the axle and in facewise bearing against the end of the trolley-wheel hub. It being perceived that only the end portion of the contact-spring has a position adjacent the wheel and that only next to the hub of the wheel, there being no proximate relations between the spring and the outer edge of the wheel-rim, the liability of the latter wearing against and cutting the contact-plate is avoided.

In the trolley-harp constructed as described capability is ever present of readily removing the trolley-wheel for its replacement as an entirety, for putting in a new bushing in the wheel, or for substituting a new axle, it being understood that it is only necessary for the removal of the axle to drive out the axle-locking pin 17.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-- 1. A trolley-harp consisting-of opposing members comprising separated jaws or checks, one member being pivotally connected to the other and capable of a transverse swinging movement, said members having an interengaging tongue and socket, and a tapering hole through the tongue and socket including portions, a detachable tapered locking-pin in said hole, and the trolley-wheel axle supported by said jaws.

2. A trolley harp consisting of opposing members, comprising separated jaws or cheeks, one member being pivotally connected to the other and capable of a transverse swinging movement, said members having an interengaging tongue and socket, and a hole through said tongue and socketed portions, a detachable locking-pin in said hole and the trolley-wheel axle supported by said jaws, and means for detachably locking the said locking- 3. A trolley-harp consisting of opposing members comprising separated jaws or cheeks,

one member being pivotally connected to the other and capable of a transverse swinging movement, said members having an interengaging tongue and socket and a hole through said tongue and socketed portions, a detachable locking-pin in said hole, a spring lockingplate mounted on one of said members and arranged to engage and disengage the lockingpin, and the trolley-wheel axle supported by said jaws.

4:. A trolley-harp consisting of opposing members, comprising separated jaws or cheeks, one member being pivotally connected to the other and capable of a transverse swinging movement, said members having an interengaging tongue and socket and a tapered hole through said tongue and socketed portions, a detachable tapered locking-pin fitting in said hole and having its contracted end portion protruding beyond the hole, and the trolley-wheel axle supported by said jaws.

5. A trolley-harp consisting of opposing members comprising separated jaws or checks,

one member being pivotally connected to the other and capable of a transverse swinging movement, said members having an interengaging tongue and socket and a tapered hole through said tongue and socketed portions, a detachable tapered locking-pin in said hole protruding outwardly beyond the opposite ends of the hole, and formed with a shoulder at its larger end, a spring-plate, apertured and arranged to engage and disengage the shouldered end of the locking-pin, and the trolleywheel axle supported by said jaws.

6. A trolley-harp consisting of opposing members comprising separated jaws or cheeks, one member being pivotally connected to the other and capable of a transverse swinging movement, said members having an interengaging tongue and socket and a tapered hole through said tongue and socketed portions, a

detachable tapered locking-pin in said hole protruding outwardly beyond the opposite ends of the hole, and formed with a shoulder at its larger end, a spring-plate, apertured, pivotally mounted on the harp for a swinging movement over, and away from over, said hole, and arranged to engage and disengage the shouldered end of the locking-pin, and the trolley-wheel axle supported by said jaws.

7. A trolley harp or yoke consisting of opposing members, one thereof being pivotally connected to the other and capable of a transverse swinging movement, the axle having its extremity supported by and secured in the fixed jaw, and having a slotted opposite end and adapted for a detachable supporting engagement in the other jaw, a pin provided in the movable jaw crossing theaxle-receiving socket therein with which the slotted eX- trernity of the axle engages, and means for locking the hinged jaw in its closed position.

Signed by me at Springfield, Massachusetts, in presence of two subscribing witnesses.

EARL R. WARREN.

Witnesses:

WM. S. BELLoWs, A. V. LEAHY. 

